USPTO serial 98603889
CHECKSUM
Reviewed by CopyMark Law Group
- Filing date
- Status date
- Registration date
- Nov 18, 2025
- Examiner
- MARTIN, LIEF ANDREW
- Law office
- FILE REPOSITORY (FRANCONIA)
What this means
Status 700 means the trademark is registered and active on the Principal Register. You have nationwide rights for the listed goods and services and may use ®. Section 8 maintenance is due between years five and six. Calendar Section 8 between years five and six, and consider trademark monitoring.
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Owner
San Francisco, CA
San Francisco, CA
San Francisco, CA
Attorney of record
The USPTO lists this attorney as the applicant's representative for correspondence on this application.
CAITLIN R. BYCZKO
Caitlin R. Byczko Barnes & Thornburg LLP11 South Meridian StreetIndianapolis, IN 46204United StatesGoods and services
| Class | Description | Status | First use |
|---|---|---|---|
| 009 | downloadable computer software for code testing; downloadable computer software for code testing, namely for code correction, code auto-healing, code quality and robustness and technical debt reduction | ACTIVE | — |
| 042 | software as a service (SAAS) featuring software for code testing; software as a service (SAAS) featuring software for code testing, namely for code correction, code autohealing, code quality and robustness and technical debt reduction | ACTIVE | — |
Related trademarks
CopyMark links this record to cited §2(d) serials, the owner's other marks, Nice classes, similar mark names, and recently changed USPTO applications.
- Other trademarks owned by Checksum AI, Inc.
- Other trademarks owned by Checksum AI, Inc.
- Other trademarks owned by Checksum AI, Inc.
- Other trademarks in Class 009
- Other trademarks in Class 042
- Similar marks named CHECKSUM
- Recently changed USPTO trademarks
- Recently filed trademarks
- Browse all trademark records
Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Nov 18, 2025 | NRCC | NOTICE OF REGISTRATION CONFIRMATION EMAILED | — |
| Nov 18, 2025 | R.PR | REGISTERED-PRINCIPAL REGISTER | Your trademark is registered on the Principal Register — the strongest form of federal trademark protection. You may use the ® symbol for the covered goods and services. Maintenance filings (Section 8 and renewals) are required to keep the registration alive. |
| Sep 30, 2025 | NPUB | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED | — |
| Sep 30, 2025 | PUBO | PUBLISHED FOR OPPOSITION | Your mark was published in the USPTO Official Gazette for a 30-day opposition window. During that period, third parties who believe they would be harmed can file an opposition. If no opposition is filed, prosecution usually continues toward registration or a Notice of Allowance. |
| Sep 24, 2025 | NONP | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED | — |
| Aug 29, 2025 | EXPT | EXPARTE APPEAL TERMINATED | — |
| Aug 29, 2025 | CNSA | APPROVED FOR PUB - PRINCIPAL REGISTER | — |
| Jul 3, 2025 | EXPI | EX PARTE APPEAL-INSTITUTED | — |
| Jul 3, 2025 | JURT | JURISDICTION RESTORED TO EXAMINING ATTORNEY | — |
| Jul 3, 2025 | EXAF | EXPARTE APPEAL RECEIVED AT TTAB | — |
| Jul 3, 2025 | TEME | TEAS/EMAIL CORRESPONDENCE ENTERED | — |
| Jul 3, 2025 | CRFA | CORRESPONDENCE RECEIVED IN LAW OFFICE | — |
| Jul 3, 2025 | ERFR | TEAS REQUEST FOR RECONSIDERATION RECEIVED | — |
| Apr 12, 2025 | GNFN | NOTIFICATION OF FINAL REFUSAL EMAILED | — |
| Apr 12, 2025 | GNFR | FINAL REFUSAL E-MAILED | A final Office Action (final refusal) means the examining attorney is maintaining at least one refusal and your options are narrower. You can file a response addressing the refusal, appeal to the Trademark Trial and Appeal Board, or let the application abandon. |
| Apr 12, 2025 | CNFR | FINAL REFUSAL WRITTEN | A final Office Action (final refusal) means the examining attorney is maintaining at least one refusal and your options are narrower. You can file a response addressing the refusal, appeal to the Trademark Trial and Appeal Board, or let the application abandon. |
| Mar 1, 2025 | TEME | TEAS/EMAIL CORRESPONDENCE ENTERED | — |
| Feb 27, 2025 | CRFA | CORRESPONDENCE RECEIVED IN LAW OFFICE | — |
| Feb 27, 2025 | TROA | TEAS RESPONSE TO OFFICE ACTION RECEIVED | This event means the applicant filed a response to a USPTO Office Action — typically arguments, amendments, or evidence addressing the examiner's objections. The USPTO will review the response and either allow the mark to proceed or issue another action. |
| Feb 3, 2025 | GNRN | NOTIFICATION OF NON-FINAL ACTION E-MAILED | A non-final Office Action means the USPTO examining attorney has raised at least one issue with your trademark application but has not made a final decision. You usually have three months to respond with arguments, amendments, or evidence. Missing the deadline can abandon the application. |
| Feb 3, 2025 | GNRT | NON-FINAL ACTION E-MAILED | A non-final Office Action means the USPTO examining attorney has raised at least one issue with your trademark application but has not made a final decision. You usually have three months to respond with arguments, amendments, or evidence. Missing the deadline can abandon the application. |
| Feb 3, 2025 | CNRT | NON-FINAL ACTION WRITTEN | A non-final Office Action means the USPTO examining attorney has raised at least one issue with your trademark application but has not made a final decision. You usually have three months to respond with arguments, amendments, or evidence. Missing the deadline can abandon the application. |
| Jan 7, 2025 | DOCK | ASSIGNED TO EXAMINER | — |
| Jan 6, 2025 | NWOS | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED | — |
| Jun 17, 2024 | NWAP | NEW APPLICATION ENTERED | — |